Pengaruh Komposisi Serbuk Tempurung Kelapa sebagai Pengisi Komposit Poliester Tak Jenuh terhadap Sifat Mekanik dan Penyerapan Air

Abstract

Coconut Shell Powder (CSP) which derived from industrial Making Anti-Mosquito can potentially be used as filler in composite materials. The study on the utilization of CSP as filler in a polyester matrix has been done with the purpose to obtain the best CSP fillers composition in Unsaturated Polyester (UPR) composites in producing mechanical properties such as tensile strength (tensile strength), impact strength, and water absorption. In this study, UPR was mixed with CSP with sizes 70 mesh with comparison of CSP : Unsaturated Polyester (20:80) by using hand lay up method. The result of FTIR characterization showed that the bonding between matrix and fillers is mechanical anchoring, hydrogen bonds and Van Der Waals forces. The result of mechanical properties showed that, at a ratio of CSP: PE (20:80), (30:70) and (40:60).Tthe maximum tensile strength obtained is 42.558 MPa with the ratio of composite is (20:80). The analysis of impact strength was obtained that the increased only occurs at ratio (20:80) of 5885.04 J/m2 . In the water absorption test, the highest water absorption occured at a ratio CSP:PE (40:60) and the water absorption increases with increasing the amount of filler.